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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - NARRATIVE (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Jun. 30, 2015 | Sep. 30, 2017 | Sep. 30, 2016
Deferred Revenue Arrangement [Line Items] |  |  |  |  |
Provision for doubtful accounts | $ 949,000 | $ 0 |  | $ 949,000 | $ 0
Asset Impairment Charges | 0 | 0 |  | 0 | $ 0
Goodwill impairment |  | $ 0 |  | 0 |
Activation fee revenue, per screen |  |  | $ 2,000 |  |
Activation fee revenue range, minimum | 1,000 |  |  | 1,000 |
Activation fee revenue range, maximum | $ 2,000 |  |  | $ 2,000 |
Shares under option, granted (shares) |  | 0 |  | 0 | 0
Shares under option, exercised (shares) | 0 | 0 |  | 0 | 0
Antidilutive securities excluded from computation of earnings per share (shares) |  |  |  | 1,481,127 | 2,899,259
Restricted Stock |  |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 20,000 | 0 |  |  |
Convertible Debt | Convertible Notes | Forward Stock Purchase Transaction |  |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |  |
Treasury stock, shares acquired (shares) | 900,000 | 900,000.0 |  | 900,000.0 | 900,000.0
Services |  |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |  |
Provision for doubtful accounts | $ 0 |  |  | $ 0 |
Administrative fee VPFs | 5.00% |  |  | 5.00% |
Incentive fees, percentage of VPF Phase I | 2.50% |  |  | 2.50% |
Up-front Payment Arrangement |  |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |  |
Administrative fee VPFs | 10.00% |  |  | 10.00% |
Prepaid Expense and Other Assets, Current [Member] |  |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |  |
Asset Impairment Charges | $ 200,000 | $ 500,000 |  | $ 1,000,000 | $ 800,000

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- Definition Range of revenue on Phase 2 DC systems the company recognizes for activation fees per unit, maximum. + References No definition available. + Details
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- Definition Administrative fee percentage (of Virtual Print Fees collected) that the company will deduct from VPFs remitted to exhibitors, in exchange for the management and administration of billing and collections of VPFs. Specific to Phase 2 DC systems and CDF2 systems. + References No definition available. + Details
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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